Thanks for your fast answer.
Thats a shame... maybe you can help me surrpounding my trouble. What I'm trying to have a is a page like this
http://entropiaarquitectura.com/index.php/ca/obra
with a content that is tagged and then opens another pages with the tagged content (you can try with tags at the end of the page).
But to do this I've modified the custom.css to the tittle and this modify me everything, not just this page.
http://entropiaarquitectura.com/index.php/ca/
http://entropiaarquitectura.com/index.php/ca/serveis
Is it possible to tell me how can I do this? Maybe I need a module that loads a portfolio with a category tagged contents, or any other type of menu. What I've been looking with no luck is to try to find a way to associate tagged articles to various categories, If I could do this I would use the masonry menu with the several categories filled with tagged articles.
Please try to help me because i'm stucked at thsi point. Thanks a lot again